Lighting fixture



May 19, 1925. 1,538,422

' w. E. COCHRAN LIGHTING FIXTURE Fi'l'ecl Nov, 17, 192] Patented Ma 19,192.5.

UNITED STATES PATENT'OFFICE.

wnsL Y'nQooonnAn, or cLnvnLANn onIo.

Lrenrme FIXTURE.

Applicationfiled November 17, 1921. Serial No. 515,805.

To all whom it may concern:

Be it known that I, Vnsnnr E. OOCHRAN, acitizen ofthe United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Lighting Fixtion of a.lighting fixture improvements.

tures, of which the following is a specifiand holding fingers foruse inlieu of the ordinary shade securing thumb screws now in common use, and,as contradistinguished from such thumb screws, being adapted to engagewithin the neck or heel portions of the shade or bowlin co-operativerelation thereto and to the adjacent shade or bowl receivingportionsofthe body ofthe fixture and being so constructed, mounted andarranged as to readily receive and conform to sha-dcor bowl necks ofvarying forms and contours, and being also particularly adapt-- cd toresiliently engage the parts thereby permitting the same to expand andcon-. tract with varying temperatures without any liability of breakageto the shade, bowl,

or globe being held.

Vith the above mentioned-and other ends in View, the invention consistsin the novel construction, arrangement, and combination of parts,hereinafter described, illustrated in some of its embodiments in'theaccompanying drawings, and particularly pointed out in the appendedclaims.

Referring to the drawings, formin,,, a part of this specification,Figure 1 is a side eleva- {igz 2, a horizontal crosssectional view takenon line 2-2 of Fig. 1.

Fig. 3, tional view of the same. a j V Fig. 4, a fragmentary verticalsectional View showing a modified form of mounting actuatingandadjusting the shade engaging and holding fingers.

embodying my an enlarged central vertical sec- Similar numeralsofreference designate like parts throughout all the figures ofthedrawings.

The body ofthe fixture may be of any suitable and convenient form and solikewise as to the specific form or shape of the shade... In the presentinstance, the body or shade supporting portion" of the fixture comprisesa downwardlyflaring housing or hood 1, terminating at its top'in areduced stem or SOQlCGblGCQlVlDg portion 1.

shade holder portion of the housing or hood 1, in the present instance,comprises an annular horizontally extending ring portion 1? terminatingin a depending annular flange 1, the latter, in the present instance,terminating at its lower edge in a beading 1 said annular or flangeportions l and 1, conjoint-1y forming the shade or bowl re-.ceivingportions of the holder and with which the neck and heel portionsof the globe or shade and the improved adjustable shade engaging andholding fingers are adapted to co-operate as hereinafter described. r vr I i The shade may be of any desired specific form and, in the presentinstance, is in the specific form a bowl 2, having a central opening 2?,at its lower portion and provided at its top with a reduced orneckportion affording, in the present instance, an

annular shoulder 2 and provided with the usual heel 2, forming the usualannular groove into which the conventional shade supporting screwsheretofore used are adapted to fit. In the present instance, the neckofthe bowl terminates in an outwardly flaring flange 2. 7

Referring now to the improved adjustable shade engaging and holdingfingers to whlch this invention particularly relates, it

will be seen that I provide a plurality of ad justable elements orfingers 3, internally arranged and normally concealed from view as willappear uporrreference to 1 of When used in connection with a fixture ofthe specific form herein disclosed, the adjustable shade engaging andholding elements or fingers 3, may be arranged within the housing orhood l, and may be secured and mounted in any suitable and convenientmanner, as for example, by means of attaching elements 3*, in thepresent instance, in

the drawings.

the specific form of screw bolts and nuts.

The ad'ustable shade en a in elements or y l I a a;

The

fingers 3, are preferably provided with horizontally extending tongue ornose portions 3 arranged to take under and co-operate with the annularheel portion or flange 12, in centralizing, elevating and clamping theshade or bowl when adjusted, and in cooperation. in the presentinstance, with the annular flanges l and 1", in engagement with theshoulder and flange portions 2 and 2 of the bowl.

As a means of actuating and adjusting the shade engaging and holdingelements or fingers 3, whereby the latter may be moved upwardly toengage beneath the heel portion 2, of th bowl neck as shown in F 3 ofthe drawings, or to move said elements or fingers inwardly to disengagethe bowl or shade, or for the insertion of a shade or bowl, suitableactuating and ad justing meansare provided on the exterior portion ofthe body or shade holder of the fixture, said means, in the presentinstance, as shown in Figs. 1, 2 and 3 of the drawings, comprisingactuating and adjusting elements 4, arranged, in the present instance,on the exterior portion of the housing or hood 1, and extending inwardlythrough the latter and engaging with the fingers or elements 3. Theelements 4 may take the specific form of screw bolts thread ed inthreaded openings in the intermediate portions or" the fingers andhaving headse, for adjustment by an ordinary screw driver. The shadeengaging and holding elements 3 may be made of resilient or springmaterial and arranged to'normally move toward and take a positioncorresponding to the dotted line position in Fig. ()l' the drawings whenthe adjusting screws 3 are turned backward or given a retrogrademovement. lVhen the fingers are in such retracted position thehm'iaontnl tongue or nose members 3" will form an intervening annularspace to receive and clear the heel or neck portion 2 of the shade orbowl so that the latter may be readily placed in position whereupon thespring elements or lingers 3 are drawn outwardly, the nose portions 3,engaging beneath the inclined heel portion of the bowl to raise thelatter as well as centralize the same, bringing the annular flange andshoulder portion 2 and 2, into engagement with the bowl receiving andsupporting flanges 1 and l, of the holder.

It will be seen that the free ends 3", of the shade engaging and holdingelements or fingers 3, are admirably adapted to readily receive andconform to the neck or heel portions of shades or bowls of varying formsand contours and that the resiliency oi the elements or spring fingers 3enables the latter to move or adjust themselves with the expansion andcontraction of the adjacent surrounding parts of the shade holder andshade in accordance with varying temperaturcs.

In the form shown in Fig. 4 of the drawings the shade engaging andholding finger is attached so as to normally move outwardly and take thedotted line position in engagement with the annular heel portion oi thebowl instead of normally retracting, as shown in the form and mountingreferred to in Figs. 1, 2 and 3 of the drawings. In

this instance, the actuating and adjusting element l, acts in onedirection only as dis tinguished from the specific screw bolt form l,shown above and the adjusting element s" is in the form of a campivotally mounted on a pivot element 4, arranged on the exterior portionof the hood or housing or otherwise suitably supported on the latter,said cam acting within a slot 1, of the hous ing 1 and being adapted tobe operated by means of a handle or lever l. When the lever l is movedfrom the full line position to the dotted line position and the baseportion of the finger 3 is relieved of the pressure of the cam head thefinger 3 will move outwardly into engagement with the annular heelportion 2 of the bowl and the latter will be held by the spring action01" thenormally expanded finger 3 and as illustrated in dotted lines inFig. a of the drawings.

The term shade as used in the claims is understood to include anysuitable form of shade and irrespective of whether in the specific formof a globe, or a bowl.

ai ing thus described some of the embodiments of my invention, withouthaving attempted to set forth all the forms in which it may be made, orall the modes of its use, what I claim and desire to secure by LettersPatent is,

i]. A shade holder, including a downwardly flaring hood terminating inannular flanges forming an annular shade 'cceiving seat, a shade bowlterminating in reduced annular outwardly inclined neck and heel portionsfitted in said annular seat, interior spring elements movably arrangedwithin and spaced from said downwardly flaring hood and terminating attheir free ends in horizontal tongue portions extending within said neckportion 01'? said shade, and means operable on the exterior of said hoodfor moving said spring elements radially outward and causing said tongueportions to yieldingly engage beneath said outwardly inclined heelportion thereby holding and elevating the neck portion of said shadebowl in said annular shade receiving seat under spring tension.

In a lighting fixture, a shade supporting holder including a downwardlyflaring housing terminating at its lower edges in annular flangeportions conjointly forming an annular shade seat, and a shade bowlprovided at its top with a reduced neck portion including an annularinwardly extending downwardly inclined heel and an annular externalshoulder seated in said shade reeeivingportion of said holder, springfingers arranged Within said down- Wardly flaring housing of said shadesupporting body and having their free ends spaced from said seat andterminating in 10 horizontall extendin nose ortions and means operableon the exterior portion of said holder for vopera-ting said springfingers to permit said horizontal nose portions to engage beneath saidannular downwardly inclined heel portion and centralize said bowl insaid holder; g

In testimony whereof I have aflixed my signature. i

WESLEY E. ooorrnAN;

